TRIPOWER 18x9.50-8 Lawn Mower Tires and Wheels - 18x9.50x8 Tires with Rim for Garden Tractor, 4 lug on 4" PCD Rim, 4PR Tubeless, 1040lbs Capacity, Set of 2

What It Is

This is a set of two 18x9.50-8 lawn mower tires mounted on 4-lug rims, designed for garden tractors and zero-turn mowers. They handle heavy loads (up to 1,040 lbs per pair) and are tubeless, making them ideal for mowing, towing, or light turf work.

Fitment & Compatibility

Before buying, check these three things:

• Bolt pattern: Must be 4 lug on 4" PCD (center-to-center distance between opposite lugs). Measure from the center of one lug to the center of the opposite lug—if it’s 4", it fits.
• Tire size: Confirm your current tire is 18x9.50-8 (18" tall, 9.5" wide, fits an 8" rim). Measure your old tire’s height and width; this one is slightly wider than standard 18x8.50-8, so check clearance against your mower deck and frame.
• Rim offset and hub size: The rim center hole is typically 3/4" or 5/8". Measure your axle shaft diameter to ensure the rim slides on smoothly. No offset adjustment is possible—if your mower uses a different offset, these may rub.

Key Things to Know

• Quality: 4-ply rating (4PR) means decent puncture resistance for residential use, but not for heavy commercial abuse. 1,040 lbs capacity per pair is sufficient for most garden tractors with attachments.
• Installation: Easy bolt-on if fitment matches. No tubes needed—just mount and tighten lug nuts to 40-50 ft-lbs. Check valve stem clearance on your mower’s frame.
• Common gotcha: Some users report the tire is slightly taller than advertised (closer to 18.5"). This can affect deck height and speed. Measure your mower’s wheel well height before buying.
• Tread: The ribbed design is turf-friendly (won’t tear up grass) but offers limited traction on wet slopes or mud.

Should You Buy It

Yes, if you need a durable, budget-friendly replacement for a garden tractor or ZTR with a 4" PCD bolt pattern and 8" rims. It’s a solid upgrade from worn-out tires, especially for flat mowing and light hauling. Skip it if you require aggressive traction or have non-standard offset rims.